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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 581 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.48.08 × 10 =
  2. 2.491.1 ÷ 100 =
  3. 3.498.6 ÷ 1000 =
  4. 4.28.79 × 100 =
  5. 5.499.7 × 1000 =
  6. 6.136.9 ÷ 10 =
  7. 7.9.21 ÷ 100 =
  8. 8.326.5 ÷ 1000 =
  9. 9.198.4 × 100 =
  10. 10.248.1 × 10 =
  11. 11.319.7 × 10 =
  12. 12.433.7 × 10 =
  13. 13.5.63 × 10 =
  14. 14.42.93 × 10 =
  15. 15.275.4 ÷ 1000 =
  16. 16.5.91 ÷ 10 =
  17. 17.357.1 ÷ 100 =
  18. 18.168.1 × 1000 =
  19. 19.18.96 × 1000 =
  20. 20.23.19 ÷ 1000 =
  21. 21.8.66 × 100 =
  22. 22.41.21 ÷ 1000 =
  23. 23.12.8 × 1000 =
  24. 24.163.6 × 1000 =
  25. 25.418.5 ÷ 100 =
  26. 26.243.4 ÷ 10 =
  27. 27.110.1 ÷ 1000 =
  28. 28.183.4 ÷ 1000 =
  29. 29.262.1 × 10 =
  30. 30.15.51 × 10 =
  31. 31.338.4 × 100 =
  32. 32.131.1 × 100 =
  33. 33.32.21 ÷ 10 =
  34. 34.106.8 × 100 =
  35. 35.217.1 × 100 =
  36. 36.84.8 ÷ 10 =
  37. 37.471.2 ÷ 10 =
  38. 38.467.1 ÷ 1000 =
  39. 39.8.71 ÷ 100 =
  40. 40.273.2 ÷ 10 =

Answer key

  1. 480.8
  2. 4.911
  3. 0.4986
  4. 2879
  5. 499700
  6. 13.69
  7. 0.0921
  8. 0.3265
  9. 19840
  10. 2481
  11. 3197
  12. 4337
  13. 56.3
  14. 429.3
  15. 0.2754
  16. 0.591
  17. 3.571
  18. 168100
  19. 18960
  20. 0.02319
  21. 866
  22. 0.04121
  23. 12800
  24. 163600
  25. 4.185
  26. 24.34
  27. 0.1101
  28. 0.1834
  29. 2621
  30. 155.1
  31. 33840
  32. 13110
  33. 3.221
  34. 10680
  35. 21710
  36. 8.48
  37. 47.12
  38. 0.4671
  39. 0.0871
  40. 27.32

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